114 lines
2.9 KiB
Python
114 lines
2.9 KiB
Python
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import hippo
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import gobject
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from sugar.graphics.canvasicon import CanvasIcon
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class _MenuStrategy:
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def get_menu_position(self, menu, grid_x1, grid_y1, grid_x2, grid_y2):
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grid_x = grid_x2
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if grid_x + menu.get_width() > Grid.COLS:
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grid_x = grid_x1 - menu.get_width() + 1
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grid_y = grid_y1
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if grid_y < 0:
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grid_y = 0
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if grid_y + menu.get_width() > Grid.ROWS:
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grid_y = Grid.ROWS - menu.get_width()
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return [grid_x, grid_y]
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class MenuIcon(CanvasIcon):
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def __init__(self, menu_shell, **kwargs):
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CanvasIcon.__init__(self, **kwargs)
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self._menu_shell = menu_shell
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self._grid = menu_shell.get_grid()
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self._menu = None
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self._hover_menu = False
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self._popdown_on_leave = False
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self._popdown_sid = 0
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self._menu_strategy = _MenuStrategy()
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self.connect('motion-notify-event', self._motion_notify_event_cb)
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def popdown(self):
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if self._menu:
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self._menu.destroy()
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self._menu = None
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self._menu_shell.set_active(None)
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def set_menu_strategy(self, strategy):
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self._menu_strategy = strategy
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def _popup(self, x1, y1, x2, y2):
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self.popdown()
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self._menu_shell.set_active(None)
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grid = self._shell.get_grid()
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self._menu = self.create_menu()
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self._menu.connect('enter-notify-event',
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self._menu_enter_notify_event_cb)
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self._menu.connect('leave-notify-event',
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self._menu_leave_notify_event_cb)
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[grid_x1, grid_y1] = grid.convert_from_screen(x1, y1)
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[grid_x2, grid_y2] = grid.convert_from_screen(x2, y2)
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strategy = self._menu_strategy
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[grid_x, grid_y] = strategy.get_menu_position(self._menu,
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grid_x1, grid_y1,
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grid_x2, grid_y2)
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grid.set_constraints(self._menu, grid_x, grid_y,
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self._menu.get_width(), self._menu.get_height())
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self._menu.show()
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self._menu_shell.set_active(self)
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def _menu_enter_notify_event_cb(self, widget, event):
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self._hover_menu = True
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def _menu_leave_notify_event_cb(self, widget, event):
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self._hover_menu = False
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if self._popdown_on_leave:
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self.popdown()
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def _start_popdown_timeout(self):
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self._stop_popdown_timeout()
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self._popdown_sid = gobject.timeout_add(1000, self._popdown_timeout_cb)
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def _stop_popdown_timeout(self):
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if self._popdown_sid > 0:
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gobject.source_remove(self._popdown_sid)
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self._popdown_sid = 0
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def _motion_notify_event_cb(self, item, event):
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if event.detail == hippo.MOTION_DETAIL_ENTER:
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self._motion_notify_enter()
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elif event.detail == hippo.MOTION_DETAIL_LEAVE:
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self._motion_notify_leave()
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def _motion_notify_enter(self):
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self._stop_popdown_timeout()
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[x, y] = self.get_context().translate_to_widget(self)
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[width, height] = self.get_allocation()
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self._popup(x, y, width, height)
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def _motion_notify_leave(self):
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self._start_popdown_timeout()
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def _popdown_timeout_cb(self):
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self._popdown_sid = 0
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if not self._hover_menu:
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self.popdown()
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else:
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self._popdown_on_leave = True
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return False
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